This pipe replaces the third factory catalytic converter after the downpipe. With this decat pipe fitted, your Subaru will instantly gain up to 10BHP.
This is done through removing the restrictive catalytic converter improving the exhaust gas flow, speeding up turbo spool time, reducing turbo lag and improving throttle response.
* CNC mandrel bent T304 grade polished stainless steel.
* Fully TIG welded.
* Large bell mouthed opening for maximum gas flow.
* 3 Inch (76mm) bore all the way through with 12mm thick flanges narrowing down to a 2 1/2 Inch (63mm) bore at the outlet.
* Perfect fit with a standard or any aftermarket catback system.
* Improves BHP and torque over the entire RPM range.
The most cost effective way of releasing power from your car.
This item will NOT pass an emissions test and is sold for off-road use only - perfect for track days.
Fits Subaru Impreza 2001 - 2005 UK spec turbo models inc WRX, STi.
Please note both the 3 Inch and 2 1/2 Inch pipes have 2 1/2 Inch bore flange to mount to the rear exhaust section.